Polygonal indexable cutting insert



FIG. 1 is a perspective view of an indexable cutting insert showing our new design;

FIG. 2 is a top plan view of the insert of FIG. 1; and,

FIG. 3 is a side view of the insert of FIG. 1;

The broken line showing is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a polygonal indexable cutting insert, as shown. 